fix: restore stt/block merge back

fix(stream): avoid launching check downstream

This reverts commit 079d7ff6.

other: merge fix from 3.0 to main.

fix: reset rowsize since it is set during blockDataAppendColInfo

test：fix windows cases

docs: fix connection param in taosws in python connector

fix: update assert issue

open split vgroup case

fix: snapshot invalid read

fix(stream): commit the update to make sure the new state of tasks will be persistent to disk.

fix: ins_indexes vgroup_id using null value instead of -1 for invalid

fix: fix tsort crash caused by not enough disk space

fix: memory leak